Louisiana-based Solenex LLC sued in 2013 to overturn the government suspension. The head of the law firm representing Solenex said Monday that there was no basis for a lease cancellation.

“This thing has been studied to death over its 32-year life. There’s no legal basis for it,” said William Perry Pendley with the Mountain States Legal Foundation.

If the cancellation goes though, Pendley said his clients would be entitled to some kind of compensation.

The Badger-Two Medicine area is the site of the creation story of the four Blackfoot tribes and the Sun Dance that is central to their religion. The land is part of the Lewis and Clark National Forest and not on Montana’s Blackfeet Reservation.

Most of the remaining leases in the area are owned by Devon Energy of Oklahoma, according to federal officials.

Under an order from U.S. District Judge Richard Leon, federal officials face a Nov. 23 deadline to notify the court whether they will lift the drilling suspension or cancel the leases. During previous hearings in the case, Leon has blasted the government’s handling of the matter, in particular the long delay experienced by Solenex.

The U.S. Forest Service in December determined drilling would negatively affect the sacred lease site and reduce its spiritual power for the Blackfeet. The Advisory Council on Historic Preservation agreed with that finding in January.

Dozens more oil and gas leases were originally sold in the area. However, over the years, most have been retired or surrendered.

Conservation groups supportive of the Blackfeet filed documents in federal court Friday to re-open a lawsuit from the National Wildlife Federation and others challenging the lease sales. That suit had been terminated in 1997 after the government suspended drilling.